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sawing off pitons for aid climbing
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jimmyv


May 18, 2005, 6:06 AM
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sawing off pitons for aid climbing
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i have quite a few long pitons, so cutting them shorter would take a while, however i do have access to an angle grinder? my worry is what the heat created would do to the strength of the metal?
anyone in the know about the safety issues?
ta

ps. i posted this before and it was removed for some reason, so sorry if you have to post again


epic_ed


May 18, 2005, 4:14 PM
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Good ol' fashioned elbow grease and a hack saw is how I made mine.

Ed


lovesclimbing


May 18, 2005, 5:22 PM
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If I was going to be using those pins for anchors or pro on trad leads than I would use the hack saw, but for aid I would use the grinder, it is fairly easy to use a grinder without causing huge amounts of heat, it just takes more time


firemonkey


May 18, 2005, 5:35 PM
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i dont know anything about aid climbing, so i dont know how they are to be used... but the heat from a grinder would definately make the metal more brittle right around the grinding point. my dad's a welder so he taught me a thing or two about tempering and such...


avalon420


May 18, 2005, 6:22 PM
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use the grinder, but every few SECONDS, dip the piton in water. If the water sizzles then u need to dip more frequently. If the steel turns a bluish color then u have destroyed the temper, but only the bluish parts are effected so you can grind a little bit further(more carefully this time) and be good to go. PM me for any more needed info.


tradjunkie


May 18, 2005, 7:56 PM
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I've used a grinder to cut several pins. You should look for a really thin cutting disk. That will keep the heat down. Then just clamp the pin in a vise and wrap it in a dirty shop rag. Have someone poor cold water on the rag while you cut the pin in half. I use a hand file to take the edge off.

Remember, don't run out of water. You can cut straight through the pin in one shot and not raise the temp of the pin much more that room temperture.

Don't forget your rain gear. The water just screams off the grinding disk.


Partner ctardi


May 18, 2005, 8:24 PM
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Or, if you arn't too cheap, cutting fluid tends to be good at cooling things while you cut them...


treez


May 18, 2005, 9:09 PM
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Got any friends who are plumbers? Vise and porta-band. Hot knife through butter, yet cool.


Partner ctardi


May 24, 2005, 8:22 PM
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Or even a regular band saw, i'm sure a metal working shop would chop them for a mniimal fee.


nedsurf


May 24, 2005, 10:35 PM
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wear gloves and glasses when you are doing this. i sliced my hand open making a six stitcher while doing metalwork. just being the safety nazi for altruistic motivations. :D


matd


Oct 27, 2005, 8:17 PM
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Use a grinder. Just keep a bowl of water next to you and drop the pin in a few times during the cutting to cool it and keep it from getting too hot. This way you can cut a dozon pins in 20 min and not have to worry about it again.
Caution - a grinder makes it all too easy to cut 'em too short, This is to be avoided.


Partner tattooed_climber


Oct 27, 2005, 9:19 PM
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In reply to:
use the grinder, but every few SECONDS, dip the piton in water. If the water sizzles then u need to dip more frequently. If the steel turns a bluish color then u have destroyed the temper, but only the bluish parts are effected so you can grind a little bit further(more carefully this time) and be good to go. PM me for any more needed info.

i second this info......but its BETTER to do it by hand...and there's no reason to be in a rush...don't be lazy


detonator123


Nov 1, 2005, 1:53 PM
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What is the best length to saw the pins down to?


tuna


Nov 1, 2005, 2:11 PM
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Hey thought about buying new and shorter pins.


aaronbr86


Nov 1, 2005, 2:48 PM
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since when are people too lazy to use a hacksaw? if you have access to a horizontal bandsaw it'll make it easy but a hacksaw wont take that much work


mingleefu


Nov 1, 2005, 3:38 PM
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In reply to:
What is the best length to saw the pins down to?

there is a Dr Piton article on sawed-off pins.
R&I #139


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